Gene pool variability and germinative parameters in natural populations of Enterolobium contortisiliquum (Leguminosae) from Northeastern Argentina
Background and aims: Enterolobium contortisiliquum is a South American native forest tree. Gene pool variability and germinate variables were estimated in populations from Northeastern Argentina in order to analyze the relationship among gene flow, mating system, and dispersal. M&M: Individu...
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| Autores principales: | , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
| Publicado: |
Sociedad Argentina de Botánica
2022
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/38230 |
| Aporte de: |
| Sumario: | Background and aims: Enterolobium contortisiliquum is a South American native forest tree. Gene pool variability and germinate variables were estimated in populations from Northeastern Argentina in order to analyze the relationship among gene flow, mating system, and dispersal.
M&M: Individuals from Eldorado and Ituzaingó populations and seeds from Ituzaingó were genotyped by means of five and four nuclear microsatellite loci, respectively. Germinate variables were determined while genetic diversity and population structure were characterized. Indirect gene flow and pollen-mediated gene flow were estimated. Nuclear genetic variability differentiation at locus and gene pool levels was determined.
Results: The analyzed populations showed high genetic diversity. At least one or two donors of pollen trees by fruit were detected. Also, the absence of population genetic structure as a consequence of high pollen and seed-mediated gene flow was detected. The seeds showed the highest genetic differentiation at locus and gene pool levels.
Conclusions: The high gene flow levels detected contribute to maintaining the gene pool variability while the high genetic diversity, the absence of both inbreeding and population genetic structure together with pollen-mediated gene flow support the allogamy as the main mating system in the analyzed populations. |
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